Responding to Part of a Complex Stimulus
Messing, John Arthur
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The experiment would involve the learning of a discrimination between two complex stimuli, each having one auditory and one visual part. After the discrimination was established, an Sd component would be combined with an Sδ component (one visual with one auditory), producing a new complex stimulus to be presented alone to the organism in five-minute extinction test trials. For instance, the auditory cue embodied in the original complex SD would be paired with the visual cue in the Sδ to make a new stimulus. The organism's responses to the new stimulus would indicate whether it was relying more upon the visual or the auditory cue to make the previous discrimination, since the two were giving conflicting information in this situation.